Just noting that the documentation found at your first link is much easier to skim by clicking on the parent section - i.e. https://www.swi-prolog.org/pldoc/doc

Just noting that the documentation found at your first link is much easier to skim by clicking on the parent section - i.e. https://www.swi-prolog.org/pldoc/doc_for?object=section(%27packages/janus.html%27) https://www.swi-prolog.org/pldoc/doc_for?object=section(%27p...